Insulated shoe construction



Dec. 2, 1952 J CLARK 2,619,741

INSULATED SHOE CONSTRUCTION Filed Sept. 16, 1950 I 2 SI'lEETS-Sl'iEET l la a JNVENTOR. JOHN AP/VOLD CLARK JTTOPIVEY Dec. 2, 1952 Fi led Sept.

.1. A. CLARK 2,619,741

INSULATED SHOE CONSTRUCTION 2 SHEETS-SHEET 2 INVENTOR. JOHN ARNOLD CLARK II'TOP/VEV Patented Dec. 2, 1952 UNITED STATES PATENT OFFICE 7 2,619,741 I issemet sii'oE CONSTRUCTION Jami Arnold Clark, Wb'rc'e'ster; Mass; attests "strains 16, 1550, Serial no. 51853269 '2 Claims";

This invention relates to new and improved foot wear particularly of the sport wear type, such shoes generally being of heavier and stronger construction than ordinaryshocs-j invention also includes lighter conventional constructions is more particularly directed tothe heavytyp'e of shoe such as for sport andals'o including work o I l .1

Th r i in l pbie of th a e eiit h e resides n the v sion 9 t sph ncter t Proof h e m ri y, de e ive t e, xim in protection to thefeet and ankles under all conditions and at the same-time to combine therewith the maximum of comfort so that the present shoe is actually more comfortable than a conventional shoe, it is completely insulated against cold or heat, it is snake bite proof due the insulation, and it is completely waterproof although made of leather.

Another object of the invention resides in the provision of a shoe as above described in which the entire upper is made of leather insulated by a sheet of aerated latex such as Foamex, the insulating material being concealed by a leather liner d an am qfthe. shoeszbeing com l t Waterproofed w erebvthcshee 100 Pe c r r Qf a d mayb imme se in wat rf many hourswith no possibilityof leaking; at the same time the shoe is extreinelycgmfortabladue in partto the fact that the yamp comprises a plain soft leather toe as opposed, to the moccasin type of toe s-othat'it'not'only fits the foot better, but it lasts longer due, to the omission of the usual moccasin seam and the construction of the present; shoe results inan. article of root, wear which isextremely long lasting; and alsole'xtreme- 1y comfortable to the foot even under extremely adverse conditions.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which Fig. 1 is a view in elevation of a shoe according to the present invention;

Fig. 2 is a vertical cross section therethrough; and

Fig. 3 is a section on line 33 of Fig. 2.

As shown in Fig. 1, the preferred embodiment of the present shoe includes a relatively thick outs-ole which is tough, flexible, long lasting and waterproof and. is made from a rubber and cork composition so that it is also substantially non-slipping due to the presence of the cork particles scattered throughout the rubber. A heel I2 is provided, the same forming a breast l4 and s h mail erfiadetf. n lin te a b t i preferably the same as that of the sole althoiigh it may have hollow s ace t ere n as. m m at I in F 2.. This b eas roviqe ..a ,,add tioriai non-slippin me n isince. wh n th w a is walking in dangerpi sterritory such as in a rocky s ream; .fO instan e s al a l: t forward slipping nqtion of the foot -and the presence of the breast it enhancesth'e chances of catching the iojot..,o' the $9 or st ne an tstop or assists in stopping the forward slipping motion thereof. .4 H

A waterproof Welt lfiisused at t "ebetween he pper. ,andthe uts and .t Qy mr .2 is s ift that ere re pm brtehle t6 e f otin the complete absence of any kind of stitching although itisf contemplated that the forward, end of the'toe'; atYZZ cQuld be reinforced or partially reinforced for ri'gj y atthis' point- T eis b a so as'aquarter2'4 and agussetzfi. the latter being attached to the former throughout, the height. thereof, so that the. shoe" is completely impervious to water throughout from the soleto the top, or, the shoe indicated at 28'. I Any form of acingmay be used, but this rormsj no partjof the invention; the lacing being completely exterior of the gusset.

The shoe made throughout from leather which is especially treated to' begin withlto" make it waterproof; all the seamsare completely waterp'roofed by WaXing'; the sole isjwate'rproofed being made r ru ber and cormgzmd theishce is a ain treated for waterproofing after it is finished} By actual tests; these shoes" have been: worn the water for over fivehours with a om-pare ab. s'enceof any kind of leaking" whatsoever and this is the first shoe the art'of s'hoeniakiiig; which is completely waterproof although made of leather.

This results in a shoe which cannot draw the feet; the aerated latex and the leather will permit the passage of air but not water and, therefore, the shoe can breathe whereby perspiration of the feet does not cause clamminess as is a well known result from wearing all-rubber shoes.

Referrng now to Figs. 2 and 3, the insole 30 is formed of a fairly thick piece of flexible leather having a filler 32 and a shank stiffener 34. The insole is provided with a lip 36 'Which is sewed as at 38 to the waterproof welt I8, the latter being doubled over as clearly shown and being absolutely watertight both due to the doubled over con struction and waterproofing preparations with which it and the thread are treated.

Upon the insole there is a layer of aerated latex 40 Which extends over the entire insole and which provides an extremely comfortable cushion for the foot as well as assisting in the prevention of the passage of heat or cold through the soles. A cover 42 is used on the latex.

The vamp of the shoe as at comprises the outer leather layer 44 which is made of a completely waterproofed top grade leather which, however, is soft and flexible and underlying the same there is a vamp shaped layer of aerated latex 4B which is sewed in all the seams, see 38. Underneath the insulating material there is a cover 48.

The remainder of foot portion of the upper is also insulated either by a strip going around the heel from one side of the vamp to the other within the area indicated at 50 or an equivalent construction may be used in one piece with the quarter insulation 52 which extends throughout the entire leg portion of the shoe except for the gusset 26 which is provided with its own layer of insulation 54.

The strips of insulation are all included in the seams throughout the shoe which additionally reinforces and Waterproofs the same and at the same time assures 100 per cent insulation. There is no point or area throughout the entire shoe which does not have the insulation material above described and, therefore, the foot is completely encased in a layer of aerated latex which makes the entire shoe soft to the foot, even though exactly fitting the same.

The construction of the shoe will be seen to those skilled in the art and particularly to outdoorsmen and others who wear heavy footwear, including working shoes, that the same is rugged, long wearing, comfortable, waterproof and extremely snug without any clamminess as would be the case with rubber footwear and without any breaking-in period required. The entire sole although very thick, is quite flexible and the shoe feels when first put on as though it were an old shoe which had been worn a long time. The non-rigid construction particularly in the toe area and throughout the vamp ensures that the shoe will conform to the foot and by eliminating the usual moccasin seam and due to the new construction, the shoe is much longer lasting and more rugged.

Also, the counter 56 and insole alone may be cushioned, as in slippers, golf and other sport shoes, hunting and fishing boots, sierra sporting boots, officers shoes and boots, and loafers. Any conventional street shoe may be made according to the present invention, which is not limited to the types described, but may apply to any shoe.

In cases where the shoe is fully insulated, the

shoe may be made as an all-weather boot, arctic, jungle, or snake boot, or as a Canadian caper or folk dancer shoe or boot.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed otherwise than as set forth in the claims, but what I claim is:

1. A shoe of the class described comprising a sole including a rubber composition outsole and an insole having a layer of soft, compressible, insulative material thereon, a vamp including a vamp-shaped layer of the said material, and a quarter, the quarter portion of the shoe including a layer of said insulative material, all of said soft, insulative portions being overlapping in such a way that the entire foot portion of the shoe is completely insulated, and a gusset including a layer of soft insulative material so that the ankle portion of the shoe is completely insulated, all the layers of the insulative material being sewed together at contiguous edges to overlap.

2. A waterproof shoe of the class described comprising a composition outsole, an insole, a layer of aerated latex on the insole, a vamp, a layer of aerated latex under the vamp, and a quarter, there being a layer of aerated latex in the quarter, the vamp latex layer extending below the top surface of the insole and being sewed thereto, and a waterproof seam about the upper and outsole, the stitching through the vamp latex layer extending therethrough.

JOHN ARNOLD CLARK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 87,310 Tower Feb. 23, 1869 177,656 Osgood May 23, 1876 483,289 Roche Sept. 27, 1892 809,713 Mayhew Jan. 9, 1906 848,770' Roberts Apr. 2, 1907 960,748 West June 7, 1910 1,577,791 Dreschler Mar. 23, 1926 2,145,102 Spini Jan. 24, 1939 2,287,026 Craig et al June 23, 1942 2,508,994 Demi-ck May 23, 1950 FOREIGN PATENTS Number Country Date 177,245 Switzerland Aug. 1, 1935 330,706 Italy Oct. 22, 1935 416,437 Great Britain Sept. 14, 1934 611,531 Germany Mar. 28, 1985 

